Answer:
C
Explanation:
Umm...a picture might send a wrong message..not sure you want that
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Bones are made of mostly collagen.
Bone is a living tissue, collagen provides a soft framework for the bone.
That statement is true.
To complete one biochemical cycles, the elements need to move through both Abiotic and biotic reservoir.
In this case, abiotic region includes non-living pathways that the cycles have to move through, such as water, soil, atmosphere, air, etc.
And the biotic region includes all living organism that the cycles have to move through, such as human, plants & perspiration and secretion
